In a very violent reaction called a thermite reaction, aluminium metal reacts with iron III oxide to form iron metal and aluminium oxide according to the equation
Answers
Certainly! In a thermite reaction, aluminum metal reacts with iron(III) oxide to produce iron metal and aluminum oxide. The balanced equation for this reaction is:
2 Al + Fe2O3 → 2 Fe + Al2O3
This reaction is highly exothermic, meaning it releases a large amount of heat energy. It is often used in applications where intense heat is required, such as metal welding or cutting.
The thermite reaction occurs due to the large difference in reactivity between aluminum and iron(III) oxide. Aluminum is a highly reactive metal, while iron(III) oxide is a compound made up of iron and oxygen. When aluminum comes into contact with iron(III) oxide, it displaces the iron from the compound, forming iron metal and aluminum oxide.
The reaction is initiated by heating the reactants to a high temperature, typically using a small amount of an igniting agent such as powdered magnesium or a strong flame. Once started, the exothermic nature of the reaction sustains it until all the reactants are consumed.
The reaction proceeds rapidly, accompanied by bright sparks and the emission of intense heat. The high temperatures generated can reach several thousand degrees Celsius, melting the iron formed and producing a pool of molten metal. This property makes the thermite reaction useful for applications like metal joining, where it can be used to weld large pieces of metal together or to cut through solid structures.
In summary, the thermite reaction between aluminum and iron(III) oxide is a highly energetic and violent reaction that produces iron metal and aluminum oxide, releasing a large amount of heat in the process. Its ability to generate extreme temperatures has practical applications in various industries requiring intense heat generation.
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Related Questions
How can you use this information about mass to help you compare the speed of the pod after the collision to the speed of the space station after the collision?
Pod: 1100KG Space station: 415000kg
Answers
The speed of the pod and the space station after collision depends on
their initial momentum.
The speeds of the pod and space station are compared as follows;
The change in the speed of the pod is \(-377.\overline{27}\) times the change in speed of the base station and in the opposite direction.Reasons:
The given information are;
Mass of the pod, m = 1100 kg
Mass of the space station, M = 415000 kg
Required:
To compare the speed of the pod and the base station after the collision
Solution:
Let v₁ represent the initial velocity of the Pod, let V₁ represent the initial
velocity of the space station, according to the conservation of linear
momentum principle, we have;
m·v₁ + M·V₁ = m·v₂ + M·V₂
Which gives;
1100·v₁ + 415000·V₁ = 1100·v₂ + 415000·V₂
\(v_2 = \dfrac{1100 \cdot v_1 + 415000 \cdot V_1 - 415000 \cdot V_2}{1100} = \dfrac{1100 \cdot v_1 + 415000 \cdot (V_1 - V_2)}{1100}\)
\(v_2 = \dfrac{1100 \cdot v_1 + 415000 \cdot (V_1 - V_2)}{1100} = v_1 + \dfrac{4150}{11} \cdot (V_1 - V_2)\)
Which gives;
\(\dfrac{v_2 - v_1 }{V_1 - V_2} = \dfrac{\Delta v}{-\Delta V} = \dfrac{4150}{11}\)
\(\dfrac{\Delta v}{\Delta V} = -\dfrac{4150}{11} = -377\frac{3}{11} = -377.\overline{27}\)
Where;
Δv = The change in the speed of the pod
ΔV = The change in the speed of the space station
The negative sign indicates a reversal in the direction of the speed
Therefore;
The change in the speed of the pod is \(-377.\overline{27}\) times the change in speed of the base station and in the opposite direction.Learn more here:
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Suppose that you are the quality engineer in a company that manufactures a certain chemical product. This product is obtained from the chemical reaction of two components under a high temperature environment, and the level of contaminant of the resulting product is the main parameter subjected to quality control. After a thorough statistical analysis on the data collected from this process, you found that the process variability follows the normal distribution, in which the average contaminant level in the product, , in parts per million (ppm) is a function of other variables of the process given by the following equation:
student submitted image, transcription available belowstudent submitted image, transcription available belowin which P1 is the average purity index of the component 1, P2 is the average purity index of the component 2, and T is the temperature at which the chemical reaction is processed in °C. For the standard deviation of the contaminant level in the product, c, also in parts per million, you found the following equation:
c = 1500P1 2 + 1700P2 2 + 2000P1P2T
in which P1 is the standard deviation of the purity index of the component 1, P2 is the standard deviation of the purity index of the component 2, and T is the standard deviation of the chemical reaction temperature. Currently, the product is being processed with components 1 and 2 having average purity levels of 0.80 and 0.85, respectively. To sustain the chemical reaction, the average temperature of the process must be set to a minimum value of 120°C. Additionally, the standard deviation for the purity index of both components is 0.1, and the standard deviation of the temperature is 0.5°C. In one week, you will have a meeting with a new costumer, who is interested on your product but not sure about its quality standards.
a) If your new customer has established a target value for the contaminant level in the product of 380 ppm, is the current process accurate enough to meet this target value? If not, propose two modifications in the process to meet the target value. Justify your proposals based on numbers. Take into consideration that the maximum purity index possible for the components is 1, and that the maximum reaction temperature allowable is 250°C for safety reasons.
b) Your customer also has a strict requirement that 99% of the products should have a contaminant level between 350 and 410 ppm. Is the current process capable (or precise enough) to meet this requirement? If not, propose two additional modifications in the process to meet the customer requirements. Justify your proposals based on numbers.
Answers
The current process is not accurate enough to meet the target contaminant level of 380 ppm. Two modifications can be proposed to improve the process.
Firstly, increasing the average purity index of component 1 (P1) to 0.85 will reduce the contaminant level. Secondly, reducing the average temperature (T) to the minimum value of 120°C will also decrease the contaminant level. These modifications can be justified based on the given equations for the contaminant level and standard deviation.
In the equation for the contaminant level, a higher P1 value will result in a lower contaminant level. By increasing P1 from 0.80 to 0.85, the contaminant level will decrease. Similarly, by reducing the average temperature from its current value, the contaminant level can be further reduced.
To meet the customer's requirement of 99% of the products having a contaminant level between 350 and 410 ppm, additional modifications are needed. Firstly, decreasing the standard deviation of the purity index for both components (P1 and P2) will reduce the process variability and bring the contaminant levels closer to the target range.
Secondly, reducing the standard deviation of the temperature (T) will also help in reducing the variability of the contaminant levels. These modifications will improve the precision of the process and increase the likelihood of meeting the customer's requirement.
In conclusion, the current process is not accurate enough to meet the target contaminant level and the precision requirement of the customer. Modifying the average purity index of component 1, average temperature, and the standard deviations of purity indices and temperature can improve both accuracy and precision.
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One student rubs a balloon against his hair several times. Another student passes a comb through her hair several times. The students place the comb near the balloon and observe that the comb repels the balloon. Which is the most likely reason the comb is able to repel the balloon?
Answers
Answer:
They have like charges
Explanation:
Like charges repel, opposite charges attract
The most likely reason the comb is able to repel the balloon is that, the balloon and the comb have the same electrical charge.
The question is incomplete, the complete question is;
One student rubs a balloon against his hair several times. Another student passes a comb through her hair several times. The students place the comb near the balloon and observe that the comb repels the balloon. Which is the most likely reason the comb is able to repel the balloon?
A.The balloon has a positive charge and the comb is neutral.
B. The balloon and the comb have the same electrical charge.
C. The balloon has a negative charge and the comb is neutral.
D. The balloon and the comb have opposite electrical charges
When the student rubs a balloon against his hair several times or another student passes a comb through her hair several times, static charges are built up on the balloon and the comb.
One of the ways by which a neutral object can be charged is by friction. That is, rubbing it against another object repeatedly.
The fact that when the students place the comb near the balloon and observe that the comb repels the balloon means that both the comb and the balloon acquired the same kind of charge after friction.
Therefore, the balloon and the comb have the same electrical charge.
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How many CO2 molecules are in 1 mole of carbon dioxide?
Answers
Answer:
I guess 1-mole carbon dioxide contains 6.02 x 10^23 molecules.
of Solids
Buoyancy
Gravity
↓
↑
Buoyancy
The density of the object on the left is 1.5 g/cm³ and
the density of the fluid is 1.0 g/cm³
Which has greater density? [
The object will
in the water column.
Answers
The density of the object on the left is 1.5 g/cm³ and the density of the fluid is 1.0 g/cm³ hence density of the object is greater and he object will sink in the water column.
What is buoyancy?
It is a force that make a body float in a liquid.
It is an upward force that is exerted by fluid to the object. For example-
If you dropped your swimming goggles in the deepest part of the pool and tried to swim down to get them then it can be frustrating because the water tries to push you back up to the surface as you're swimming downward. This upward force exerted on objects submerged in fluids is the buoyant force.
Given,
density of the object = 1.5 g/cm³
density of the fluid = 1.0 g/cm³
Therefore, the density of the object on the left is 1.5 g/cm³ and the density of the fluid is 1.0 g/cm³ hence density of the object is greater and he object will sink in the water column.
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4. How many of moles of FeO are in 3.6 x 1024 molecules of this compound?
Answers
Answer:
The answer is 5.98 molesExplanation:
To find the number of moles in a substance given it's number of entities we use the formula
\(n = \frac{N}{L} \\ \)
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
\(n = \frac{3.6 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 5.98006644...\)
We have the final answer as
5.98 molesHope this helps you
in the titration of a strong acid with a strong base, how do you calculate these quantities?
Answers
In the titration of a strong acid with a strong base, the following quantities can be calculated:
The initial volume of the acid or base solution The concentration of the acid or base solution The volume of the titrant added at the endpoint The concentration of the titrant The moles of the acid or base The moles of the titrantTo calculate these quantities in a titration, you can use the following equation:
M₁V₁ = M₂V₂
Where M1 is the initial concentration of the acid or base solution, V1 is the initial volume of the acid or base solution, M2 is the concentration of the titrant, and V2 is the volume of the titrant added at the endpoint.
By rearranging this equation, you can solve for any of the unknown quantities. For example, if you know the initial volume and concentration of the acid or base solution, and the volume of the titrant added at the endpoint, you can calculate the concentration of the titrant by rearranging the equation to solve for M2:
M2 = (M1V1)/V2
Similarly, you can calculate the moles of the acid or base by multiplying the initial volume and concentration of the acid or base solution:
moles of acid or base = M1V1
And you can calculate the moles of the titrant by multiplying the volume and concentration of the titrant:
moles of titrant = M2V2
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What factors do you think might cause the climate to change?
Answers
Answer:
the main cause of climate change is burning fossil fuels such as oil, gas, and coal. When burnt, fossil fuels release carbon dioxide into the air, causing the planet to heat up.
Explanation:
Which statement describes a gas condensing into a liquid?
A.
The atoms in the molecules get heavier so they move less.
B.
The molecules break into smaller pieces that take up less space.
C.
The molecules stick together to make bigger molecules.
D.
The molecules get closer together and move more slowly.
Answers
Answer: molecules get closer
Explanation:
Condensation is the process in which molecules of a gas slow down, come together, and form a liquid. When gas molecules transfer their energy to something cooler, they slow down and their attractions cause them to bond to become a liquid
hope this helps
pls mark me brainliest
Answer:
D. The molecules get closer together and move more slowly.
a student takes 10.00 ml of 12 m hcl acid and dilutes it to 100.0 ml. he then takes 50.00 ml of the dilute solution and adds it to 100.0 ml of distilled water. assume the volumes are additive. what is the concentration of the final solution.
Answers
The concentration of the final solution using dilution is 0.4 M.
The concentration of the final solution can be found using the dilution equation, M1V1 = M2V2.
Step 1: Find the concentration of the dilute solution after the first dilution.
M1 = 12 M
V1 = 10.00 ml
V2 = 100.0 ml
12 M x 10.00 ml = M2 x 100.0 ml
M2 = 1.2 M
Step 2: Find the concentration of the final solution after the second dilution.
M1 = 1.2 M
V1 = 50.00 ml
V2 = 100.0 ml + 50.00 ml = 150.0 ml
1.2 M x 50.00 ml = M2 x 150.0 ml
M2 = 0.4 M
Therefore, the concentration of the final solution is 0.4 M.
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It is often possible to change a hydrate into an anhydrous compound by heating it to drive off the water (dehydration). Write an equation that shows the dehydration of sodium carbonate decahydrate
Answers
To solve such this we must know the concept of dehydration reaction. Therefore, an equation that shows the dehydration of sodium carbonate decahydrate is
Na\(_2\)CO\(_3\).10H\(_2\)O\(\rightarrow\) Na\(_2\)CO\(_3\).H\(_2\)O+ 10H\(_2\)O
Na\(_2\)CO\(_3\).H\(_2\)O\(\rightarrow\) Na\(_2\)CO\(_3\) + H\(_2\)O
What is chemical reaction?Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.
A condensation reaction is a sort of dehydration process. During the method of combining compounds, a molecule of water is taken from one of reaction mixture, resulting in the formation of an unsaturated chemical. Another distinguishing feature of a dehydration process is that the primary products has always been water.
Na\(_2\)CO\(_3\).10H\(_2\)O\(\rightarrow\) Na\(_2\)CO\(_3\).H\(_2\)O+ 10H\(_2\)O
Na\(_2\)CO\(_3\).H\(_2\)O\(\rightarrow\) Na\(_2\)CO\(_3\) + H\(_2\)O
Therefore, an equation that shows the dehydration of sodium carbonate decahydrate is
Na\(_2\)CO\(_3\).10H\(_2\)O\(\rightarrow\) Na\(_2\)CO\(_3\).H\(_2\)O+ 10H\(_2\)O
Na\(_2\)CO\(_3\).H\(_2\)O\(\rightarrow\) Na\(_2\)CO\(_3\) + H\(_2\)O
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large organic molecules are usually assembled by polymerization of a few kinds of simple subunits belonging to the same class of chemicals. which of the following is an exception to this statement?
Answers
Large organic molecules are usually assembled by polymerization of a few kinds of simple subunits belonging to the same class of chemicals. The following is an exception to this statement is:
c) Steroids
Large organic molecules, such as proteins, nucleic acids, and carbohydrates, are typically formed through the process of polymerization. Polymerization involves the repetitive bonding of smaller subunits, known as monomers, to form a long chain or polymer. These monomers usually belong to the same class of chemicals, meaning they have similar structures and functional groups.
In the case of DNA, the monomers are nucleotides, which consist of a sugar molecule, a phosphate group, and a nitrogenous base. The repetitive bonding of nucleotides creates a long chain of DNA.
Similarly, cellulose, a major component of plant cell walls, is composed of repeating units of glucose monomers. The polymerization of glucose molecules forms long cellulose chains.
Contractile proteins, such as actin and myosin found in muscle fibers, are also assembled through the polymerization of monomers. These monomers, called amino acids, are linked together by peptide bonds to form polypeptide chains, which then fold into the functional protein structure.
However, steroids, including molecules like cholesterol, estrogen, and testosterone, are an exception to this general pattern of polymerization. Steroids have a distinct structure consisting of four fused carbon rings. They are not formed through repetitive bonding of identical subunits like proteins or nucleic acids. Instead, steroids are synthesized through specific biosynthetic pathways in living organisms.
While steroids play crucial roles in various physiological processes, they do not follow the typical pattern of polymerization seen in other organic polymers.
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The complete question is:
Large organic molecules are usually assembled by polymerization of a few kinds of simple subunits belonging to the same class of chemicals. which of the following is an exception to this statement?
a) DNA
b) cellulose
c) steroids
d) a contractile protein
your friend is studying a specific exergonic reaction. your friend hypothesizes that the addition of enzyme x will reduce the delta-g of this reaction, thus allowing it to proceed spontaneously. what do you think of your friend's hypothesis?
Answers
Your friend is studying a specific exergonic reaction. Your friend hypothesizes that the addition of enzyme X will reduce the delta-G of this reaction, thus allowing it to proceed spontaneously.
Enzymes do not change delta-G, so this hypothesis does not fit with what is known about this reaction.
ABOUT EXERGONIC REACTIONAccording to the second law of thermodynamics any reaction that occurs at constant temperature without input of electrical energy or photons is exergonic. An example is cellular respiration. An exergonic reaction is a chemical reaction in which the change in free energy is negative (there is a net loss of free energy). It shows a spontaneous reaction if the system is closed and the initial and final temperatures are the same. For processes that take place in a closed system at constant pressure and temperature, the Gibbs free energy is used, while the Helmholtz energy is relevant for processes that take place at constant temperature and volume.
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Your friend is studying a specific exergonic reaction. your friend hypothesizes that the addition of enzyme x will reduce the delta-g of this reaction, thus allowing it to proceed spontaneously. The hypothesis does not fit with what is known about this reaction because Enzymes do not change delta-G.
Exergonic reaction1) An exergonic reaction is a reaction that produces free energy. Because it releases energy rather than consuming it, this kind of reaction can occur naturally, unhindered by outside factors.
2) Chemical processes known as exergonic reactions have a negative change in free energy. The free energy of a system is used to calculate its overall quantity of available energy; negative changes signify energy release, whilst positive changes signify energy storage.
Only the activation energy is altered by enzyme.
This concept does not make sense given what is known about the reaction because enzymes do not alter delta G.
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the gram staining procedure is best described as a(n) __ staining technique.
Answers
Answer:
differential
Explanation:
According to openstax.org, "Gram-staining is a differential staining technique that uses a primary stain and a secondary counterstain to distinguish between gram-positive and gram-negative bacteria."
Which quantum number describes the orientation of an orbital within a sublevel?
Answers
Explanation:
Each orbital within a particular sublevel is distinguished by its value of ml. This quantum number may be more aptly named the orbital orientation quantum number. In each energy sublevel (designated by l) there are 2l+1 possible independent orientations of the electron cloud.
Answer:
\(m_l-magnetic\)
Explanation:
The principal energy level, n, tells us which shell it is in and the total energy of the electron.
The angular momentum (azimuthal), l, tells us which sublevel/subshells the electron is in.
The magnetic, m sub l, tells us the orientation the electron is spinning.
How many atoms are present in 4.56moles of sulfur?
Answers
Answer:
2.75 x 10^24 atoms
Explanation:
1 mole = 6.022 x 10^23 atoms
4.56 moles has:
4.56 x 6.022 x 10^23 = 2.75 x 10^24 atoms
BRAINLIST!!!
Which of the following best describes a process of erosion?
A.
Rocks along the coast are broken up by waves crashing into the shore.
B.
Mud, silt, sand, and pebbles are carried across the region by running water.
C.
Glaciers wear down and smooth rock as they slide across it.
D.
The wind lays down sediment to form small hills called dunes.
Answers
Answer:
The answer is C
Conductivity level probes can only be used with conductive liquids.
a. True
b. False
Answers
Conductivity level probes can only be used with conductive liquids.
a) True
The conductivity probe is the level of point measuring system consist of two or more probes or electrodes or electrodes and vessel ,the material in the vessel completes the circuit when the level will rise in the vessel. A probe is the insertable device which have the sensor. the conductive liquids are that are the solution of the acids , the bases and the salts. sugar solution and the distilled water are poor conductors.
Thus, it is true that , Conductivity level probes can only be used with conductive liquids.
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what is Nylon 6-6 made of..?
Answers
Answer:
nylon 66 is made of two monomers each containing 6 carbon atoms, hexamethylenediamine and adipic acid.
OSSIBLES2
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35 Wd be able to be one to our body and remove carbon diote on our biker
45 Wd be able to gicky react to save ourselves from daneous stations
3 Wed he wable to crostate and deliver orygen ad carbon dioxide throughout our body
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Next >
Answers
What is the∆S° of 0₂
Answers
Answer:0
Explanation: zero because it is the most stable form of oxygen in its standard state
Who Ever answers get 30 points (please no guessing)
Signals from _______ and the body's _______ are received by the brain and the spinal cord.
Answers
Signals from the nervous system and the body's neurons are received by the brain and the spinal cord.
I think this is the answer hope it helps!
Answer:
Organs and senses.
Explanation:
The central nervous system includes the brain and spinal cord.
Your internal organs and your senses send signals to your brain and spinal cord.
What mass of H2 forms when
35.25 g of Al reacts with excess
hydrochloric acid?
2AI+ 6HCI→ 2AlCl3 + 3H₂
Al: 26.98 g/mol
H₂: 2.02 g/mol
[?] g H₂
Answers
35.25/26.98 (mass reacted/molar mass of Al)
2) Find number of moles of H2 produced:
Number of mol. of Al x 3/2 (based on stoichiometry)
3) Find mass of H2 formed:
Number of mol. of H2 x molar mass of H2 = 3.9588mol = 4 mol (estimated value)
what is the importance of polar covalent and hydrogen bonds in the structure of water?
Answers
Answer:
Water is a remarkable substance, and its unique properties are largely due to the presence of polar covalent bonds and hydrogen bonds in its structure. These characteristics play a crucial role in the physical and chemical properties of water, making it essential for life as we know it.
Explanation:
The polar covalent bonds in water arise from the unequal sharing of electrons between oxygen and hydrogen atoms. This results in the oxygen atom having a partial negative charge (δ-) and the hydrogen atoms having partial positive charges (δ+). These charges create polarity within the water molecule, leading to the formation of hydrogen bonds.
Hydrogen bonds occur when the partially positive hydrogen atom of one water molecule is attracted to the partially negative oxygen atom of another water molecule. These hydrogen bonds are relatively weak individually, but when present in large numbers, they contribute to the cohesion, surface tension, and high boiling point of water.
The importance of these bonds is manifold. The cohesion between water molecules due to hydrogen bonding enables water to form droplets, have a high surface tension, and flow freely, facilitating transport within organisms and in the environment. Additionally, hydrogen bonding leads to the high specific heat capacity and heat of vaporization of water, making it an effective regulator of temperature in living organisms and ensuring stable environmental conditions.
Furthermore, hydrogen bonds play a crucial role in the unique properties of water as a solvent. The polar nature of water allows it to dissolve a wide range of substances, including ionic compounds and polar molecules, facilitating various biological processes such as nutrient transport and chemical reactions in cells.
how do substances change into different substances during chemical reactions
Answers
Answer:
Chemical reaction are irreversible. Some of the example of chemical reaction are cooking, rusting, and burning. During a chemical reaction, the composition of substances changes and the particles rearrange to form a new substance. The new substance formed after chemical reaction of substance has different physical and chemical properties.
When a chemical reaction occur, the atoms or molecules of the substances change its physical and chemical properties such as while cooking of vegetable, the molecules of vegetable undergo changes in their properties and form a new substance which is different from the earlier.
The isolated organic layer is swirled over anhydrous magnesium sulfate (MgSO4). Explain the purpose of this step and describe the visual indication that sufficient magnesium sulfate has been added to the organic layer. Describe via a balanced chemical equation how MgSO4 accomplishes its intended purpose during the purification step.
Answers
The purpose of swirling the isolated organic layer over anhydrous magnesium sulfate (MgSO₄) is to remove any remaining water or moisture present in the organic layer.
Anhydrous magnesium sulfate is a desiccant, meaning it has a strong affinity for water and can effectively absorb it from the organic layer.
During this step, the anhydrous magnesium sulfate acts as a drying agent. It absorbs any water molecules present in the organic layer, thereby reducing the water content and improving the purity of the organic compound. Removing water is important because it can interfere with subsequent processes or reactions and affect the quality of the final product.
The visual indication that sufficient magnesium sulfate has been added to the organic layer is the appearance of clumping or caking of the magnesium sulfate particles. Initially, the anhydrous magnesium sulfate is a fine powder, but as it absorbs water, it forms hydrated crystals and clumps together. When the organic layer is swirled and comes into contact with the hydrated magnesium sulfate, the presence of clumps indicates that sufficient drying agent has been added.
The chemical equation that describes how anhydrous magnesium sulfate accomplishes its purpose during the purification step is:
MgSO₄ + H₂O → MgSO₄·nH₂O
In this equation, anhydrous magnesium sulfate (MgSO₄) reacts with water (H₂O) to form hydrated magnesium sulfate (MgSO₄·nH₂O), where "n" represents the number of water molecules that are chemically bound to the magnesium sulfate crystals. This process is exothermic, meaning it releases heat as the hydration occurs.
The resulting hydrated magnesium sulfate effectively removes water from the organic layer, leading to a dried and purified organic compound suitable for further processing or analysis.
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if the caffeine concentration in a particular brand of soda is 3.45 mg/oz, 3.45 mg/oz, drinking how many cans of soda would be lethal? assume that 10.0 g of caffeine is a lethal dose, and there are 12 oz in a can.
Answers
The cans of soda drun9 so that would be lethal is 242 cans. The result is obtained by using the formula for concentration of a solution.
What is the concentration of a solution?In a solution, the concentration can be calculated by
C = n/V
Where
C = mass concentrationn = mass of soluteV = volume of solutionSuppose we have a particular brand of soda contains caffeine with
Mass concentration, C = 3.45 mg/oz.Volume of soda in a can, V = 12 oz.The lethal dose of soda = 10.0 g.Find the number of cans of soda so that would be lethal!
The mass of caffeine in a can is
C = n/V
3.45 = n/12
n = 3.45 × 12
n = 41.4 mg
The number of cans of soda so that the mass of caffeine will reach the lethal dose is
10.00/n = 10.0 g/41.4 mg
10.00/n = 10.0 g/0.0414 g
10.00/n = 241.5
10.00/n ≈ 242 cans
Hence, it would be lethal is a person drinks 242 cans of the soda.
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Which of the following has a mass of 40 g?
Answers
Answer:
what is the following answers? ill help if u provide them :)
Explanation:
Answer:
All of the above
Explanation:
On CK12
When does the shape of a molecule affect its polarity?
A. When the molecule contains ionic bonds
B. When the molecule contains polar bonds
C. When the molecule contains hydrogen bonds
D. When the molecule contains nonpolar bonds
Answers
Answer:
B When the molecule contains polar bonds.
Explanation:
AP-EXpert
The shape of a molecule affect its polarity, when the molecule contains polar bonds because polarity depends on polar bonds.
What is the effect on polarity?The polarization of a molecule greatly depends on the shape of the molecule. The net dipole moment occurs only due to the uneven distribution of electrons between the two atoms.
So we can conclude that the shape of a molecule affect its polarity, when the molecule contains polar bonds because polarity depends on polar bonds.
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Please select the word from the list that best fits the definition Composed of one type of compound molecule compound mixture chemical formula molecular formula pure substance
Answers
Answer:
Pure substance
Explanation:
Molecule: contains more atoms of different elements. An example is CO2 molecule. So this option is wrong.
Compound: All compounds are molecules so this option is also wrong.
Mixture: Refers to the union of more than one substances that can be separated.
Chemical and Molecular formular: Represents the constituents of a molecule. This is wrong.
Pure substance: This is the correct option. For an object to be considered pure, it must be composed entirely of one compound.